use the method of substitution to solve the following pairs of simultaneous equations 1. y = 2x-4 and 3x+y=11

x=3 and y=2

Step-by-step explanation:

first you rearranging the values

2x - y = 4 (i

3x + y = 11 (ii)

make y the subject of formular from ii

y=11 - 3x (iii

substitutes equ. (iii) into (i)

2x - (11-3x) = 4

2x - 11 + 3x = 4

5x = 15

x = 3

substituting x into equ. (iii) we have:

y = 11 - 3(3)

y = 11 - 9

y = 2

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation:

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy