What is the solution to y= 5.4x+13.92 and y= -2x-3.1

(-2.57, 13.92)  and (-1.55,-3.1)

Step-by-step explanation:

All you do is plug 0 into each equation for x to find y.

y=5.4(0)+13.92

y=13.92

y=-2x-3.1

y=2(0)-3.1

y=-3.1  

Then to find x just plug 0 in for f(x).

0=5.4x+13.92

-5.4x=13.92

x=-2.57

0=-2x-3.1

2x=-3.1

x=-1.55

y=5.4x+13.92→(-2.57, 13.92)

y=-2x-3.1→(-1.55,-3.1)

Step-by-step explanation:

The projection of u on v is expressed as;

Given

u=1.6i+3.3j

v=-2.1i-.5j

u*v = (1.6i+3.3j )*(-2.1i-0.5j )

u*v = 1.6i(-2.1i) + 3.3j(-0.5j)

u*v = -3.36 - 1.65

u*v = -5.01

|v|² = (√(-2.1)²+(-0.5)²)²

|v|² = (-2.1)²+(-0.5)²

|v|² = 4.41+0.25

|v|² = 4.66

Substitute into the formula;