4x+3y=20 2x+y=7 how do i solve this? i forgot how to do it : / also no answer choice

So for this, I will be using the substitution method. Firstly, subtract both sides in the second equation by 2x:

Next, substitute y in the first equation with 7-2x, then solve for x from there:

Now that we got x, substitute it into either equation to solve for y:

In short, x = 1/2 and y = 6.

answer: both chords and diameters have two endpoints on a circle. diameters must intersect the center of a circle.

d. you cannot tell because there are no values shown.