What is the value of 50 - 3(x² -y? ) + x when
x= 6, and y = -4?

- 64

Step-by-step explanation:

Given

50 - 3(x² - y) + x ← substitute x = 6, y = - 4 into the expression

= 50 - 3(6² - (- 4)) + 6 ← evaluate the parenthesis

= 50 - 3(36 + 4) + 6

= 50 - (3 × 40) + 6

= 50 - 120 + 6 ← evaluate from left to right

= - 70 + 6

= - 64

robert puts 2 in each row

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.