Question

Watch help video Drag the red and blue dots along the x-axis and y-axis to graph 3x + 5y = 18. 10 9 8 7 5 4 3 2 1 -10 -9 -8 -7 26 -5 -4 -3 1 2 4 5 6 9 -1 -2 -3 -4 -8 -9 -10 IPI O​

Answer 1

Explanation:

the equation is

3x + 5y = 18

the blue dot is the interception of the line with the y-axis. that is the y value, when x = 0.

the equation for x = 0 is

3×0 + 5y = 18

5y = 18

y = 18/5 = 3 3/5 = 3.6

the red dot is the interception of the line with the x-axis. that is the x value, when y = 0.

the equation for y = 0 is

3x + 5×0 = 18

3x = 18

x = 18/3 = 6

so, you need to move the blue dot to 3.6 and the red dot to 6.