If the direction consines of a certin vector a=1/2, b= -1√2 then the angle with the respect to the z axis y may be?

a. y=40
b. y=150
c y=135
d. y=60

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!