Write this polynomial in descending order. Enter exponents using the caret (^). For example, enter x2 as x^2. –7 + 8x2 – 4x

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.