Determine the intersection points with the coordinate axes of the following straight lines.
y=−2x+3.5
Intersection with the x-axis
Calculate the intersection of the line with the x-axis.
Set the expression for the line equation equal to 0 and solve for x.
02xx===−2x+3.53.51.75∣+2x∣:2
⇒ The line intersects the x-axis at Sx(1.75∣0).
Intersection with the y-axis
Calculate the intersection of the line with the y-axis.
To do this, plug the value x=0 into the expression for the straight line equation.
y=−2⋅0+3.5
y=3.5
⇒ The line intersects the y-axis at Sy(0∣3.5).
Do you have a question?
y=5x−7
Intersection with the x-axis
Calculate the intersection of the line with the x-axis.
Set the expression for the line equation equal to 0 and solve for x.
05xx===5x−7757=1.4∣+7∣:5
⇒ The line intersects the x-axis at Sx(1.4∣0).
Intersection with the y-axis
Calculate the intersection of the line with the y-axis.
To do this, plug the value x=0 into the expression for the straight line equation.
y=5⋅0−7
y=−7
⇒ The line intersects the y-axis at Sy(0∣−7).
Do you have a question?
y=23x+2
Intersection with the x-axis
Calculate the intersection of the line with the x-axis.
Set the expression for the line equation equal to 0 and solve for x.
023xx===23x+2−2−34∣−2∣⋅32
⇒ The line intersects the x-axis at Sx(−34−∣0).
Intersection with the y-axis
Calculate the intersection of the line with the y-axis.
To do this, plug the value x=0 into the expression for the straight line equation.
y=23⋅0+2
y=2
⇒ The line intersects the y-axis at Sy(0∣2).
Do you have a question?
y=−52x+25
Intersection with the x-axis
Calculate the intersection of the line with the x-axis.
Set the expression for the line equation equal to 0 and solve for x.
052xx===−52x+2525425=6.25∣+52x∣⋅25
⇒ The line intersects the x-axis at Sx(6.25∣0).
Intersection with the y-axis
Calculate the intersection of the line with the y-axis.
To do this, plug the value x=0 into the expression for the straight line equation.
y=−52⋅0+25
y=25=2.5
⇒ The line intersects the y-axis at Sy(0∣2.5).
Do you have a question?
y=2(x−32)
To obtain a general line equation y=m⋅x+t, multiply out the bracket
y=2(x−32)
y=2x−34
Intersection with the x-axis
Calculate the intersection of the line with the x-axis.
Set the expression for the line equation equal to 0 and solve for x.
02xx===2x−343432∣+34∣:2
⇒ The line intersects the x-axis at Sx(32∣0).
Intersection with the y-axis
Calculate the intersection of the line with the y-axis.
To do this, plug the value x=0 into the expression for the straight line equation.
y=2⋅0−34
y=−34
⇒ The line intersects the y-axis at Sy(0∣−34).
Do you have a question?
y=−34−21x
Transform the equation
To obtain a general line equation y=m⋅x+t, swap both elements on the right side.
y=−34−21x
y=−21x−34
Intersection with the x-axis
Calculate the intersection of the line with the x-axis.
Set the expression for the line equation equal to 0 and solve for x.
021xx===−34−21x−34−38=−232∣+21x∣⋅2
⇒ The line intersects the x-axis at Sx(−38∣0).
Intersection with the y-axis
Calculate the intersection of the line with the y-axis.
To do this, plug the value x=0 into the expression for the straight line equation.
y=−21⋅0−34
y=−34
⇒ The line intersects the y-axis at Sy(0∣−34).
Do you have a question?
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