Q: What is the value of y when x equals -2 in the equation 8x - 3y equals -7?

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

x=1, y=1

(1, 1)

y=4x=1Because:8x - y = 45x + 3y = 17You can rearrange the first equation to give:y = 8x - 4And substitute this into the second equation:5x + 3(8x - 4) = 17Expanded out:5x + 24x - 12 = 1729x - 12= 1729x = 29So x=1And because you know know x you can put that into an equation to find y:y = 8x - 4y= 8 - 4y= 4

3(8x-y = 31) 5x+3y = 23 Multiply all terms in the top equation by 3: 24x-3y = 83 5x+3y = 23 Add both equations together in order to eliminate y: 29x = 116 Divide both sides by 29 to find the value of x: x = 4 Substitute the value of x into the original equations to find the value of y: Therefore: x = 4 and y = 1

It is an equation and the value of x is 7

Related questions

8x + 3y = 248x - 8x + 3y = -8x + 243y = - 8x + 243y/3 = (- 8x + 24)/3y = -8x/3 + 24/3y = (-8/3)x + 8 this is the slope-intercept form of the equation of the line, y = mx + b, where the slope m is -8/3 and the y-intercept b is 8.

x=1, y=1

y=4x=1Because:8x - y = 45x + 3y = 17You can rearrange the first equation to give:y = 8x - 4And substitute this into the second equation:5x + 3(8x - 4) = 17Expanded out:5x + 24x - 12 = 1729x - 12= 1729x = 29So x=1And because you know know x you can put that into an equation to find y:y = 8x - 4y= 8 - 4y= 4

(1, 1)

3(8x-y = 31) 5x+3y = 23 Multiply all terms in the top equation by 3: 24x-3y = 83 5x+3y = 23 Add both equations together in order to eliminate y: 29x = 116 Divide both sides by 29 to find the value of x: x = 4 Substitute the value of x into the original equations to find the value of y: Therefore: x = 4 and y = 1

It is an equation and the value of x is -5

It is an equation and the value of x is 7

4x + 3y = 8x + y so 3y - y = 8x - 4x ie 2y = 4x so y = 2x

8x-3y=6-4x gives 12x-3y=6 which in standard form is y=-2+4x

3x - 3y = 12 ,,,, divide all equation on 3 ---> x - y = 4 .. Eq.14y - 8x = -16 ,,,, divide all equation on 4 ---> -2x + y = -4 .. Eq.2by calculating the two eq. together the result will be :x - 2x = zero-x = zeroX = zeroPut the value of X, on Eq.1 to find the value of Y :x - y = 4zero - y = 4Y = 4

-8x+3y=12 3y = 8x+12 y = (8/3)x + 4 So it will be a line with slope 8/3 and y intercept of 4

3/2