Download Using Intercepts to Graph Equations (4.3) x-intercept

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Transcript
4.3 Using Intercepts to Graph Equations
Using Intercepts to Graph Equations (4.3)
x-intercept - x value where the graph
crosses the x-axis
y-intercept - ________________________
____________
Find the x - intercept of the following.
HINT: to find x-intercepts, substitute 0 in for y
and solve for x.
1. 2x + 3y = 6
2. y = 2x + 20
Find the y - intercept of the following.
HINT: to find y-intercepts, substitute 0 in for x
and solve for y.
1. 2x + 3y = 6
2. y = 2x + 20
Find the x intercept and y intercept of
2x + y = 15
4.3 Using Intercepts to Graph Equations
Graph the equation...
3.5x + 7y = 14
Find the intercepts by plugging in zero.
To find the x-intercept,
make y=0
To find the y-intercept,
make x=0
y = 4x + 40