Graph the linear equation -5x+y=10. then identify the x-intercept

Graph the line using the slope and y-intercept, or two points.

Slope:  5

y-intercept:  10

x:0,1

y:10,15

Let's solve for x.

−5x+y=10

Step 1: Add -y to both sides.

−5x+y+−y=10+−y

−5x=−y+10

Step 2: Divide both sides by -5.

−5x  / −5

=

−y+10  / −5

x=  1  / 5 y−2

x=  1  / 5 y−2

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

i believe a. 12x≥120 is the answer