![](https://static.wixstatic.com/media/a27d24_e436ac8a329c46708e46b536719621b4~mv2.jpg/v1/fill/w_158,h_119,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/a27d24_e436ac8a329c46708e46b536719621b4~mv2.jpg)
The equation is y = 2x -1 and as you know it should be y = mx - c
so c here is -1 this excludes the upper two choices
now the lower ones are both passing through -1 so now we look at any point
for example if I look at the lower left at x = 5 according to our equation y = 2(5)-1=9 but their graph has only 1.5 ...nope bad choice
The bottom right is our graph
What is the intercept