contestada

Find the x- and y- intercept of the line
-6.9 - 7.8y = 71.76
If anyone could help me with this that would be great.

Respuesta :

texaschic101
-6.9x - 7.8y = 71.76

to find the y int, sub in 0 for x and solve for y
-6.9(0) - 7.8y = 71.76
-7.8y = 71.76
y = 71.76/-7.8
y = -9.2...so the y int is (0,-9.2)

to find the x int, sub in 0 for y and solve for x
-6.9x - 7.8y = 71.76
-6.9x - 7.8(0) = 71.76
-6.9x = 71.76
x = 71.76 / -6.9
x = -10.4....so ur x int is (10.4,0)