Question

Determine the coordinates of each point of intersection without graphing?
a.) y=-x+8. b.) y=-3x
y=x-2 y=-4x+2

Answer 1

Basically, just substitute 0 for x and solve for y, and vice-versa.
y=-x+8
y-intercept: 8
x-intercept: 8

y=-3x
y-intercept: 0
x-intercept: 0

y=x-2
y-intercept: 2
x-intercept: 2

y=-4x+2
y-intercept: 2
x-intercept: 1/2