Question

Which choice is the most efficient first step to solve this set of equations?

Answer 1

Answer:

Option b) is correct

3x+4(2x+4)=17  Substitute (2x+4) for y in the second equation

Step-by-step explanation:

Given Equations are

$y=2x+4\hfill (1)$ and $3x+4y=17\hfill (2)$

To solve the given equations we have to find the value of

x and y values.

Here y value is given so that we can substitute  y=3x+4 value  in second equation

ie., Substitute equation (1) in (2) equation we can easily get x value.

Therefore  substitute (2x+4) for y in the second equation we get

3x+4(2x+4)=17

Option b) is correct