Question

Please answer asap will give brainly

Answer 1

Answer:

-2; 4

Step-by-step explanation:

6x - 8y + 1 = 6(1/2) - 8(3/4) + 1 = 3 - 6 + 1 = -2

3xy - 2x² = 3*4*3 - 2*4² = 36 - 32 = 4

Answer 2

Use the substitution method

Answers:

6x-8y+1

6(1/2)-8(3/4)+1

Cross out 6 and 2 , divide by 2. 6/2= 3 , 2/2= 1, 3/1= 3

Cross out 8 and 4 divide by 4 . -8/4= -2 , 4/4= 1, -2/1= -2 and -2*3= -6

3-6+1

3-5

= -2

3xy-2x^ 2

3(4)(3)-2(4)^ 2

(3)(4)(3)= 36

write out 4 and 4 ( two times because of the exponent)

4*4= 16

36-2(16)

Mutiply first then subtract

-2*16= -32

36-32

= 4