On the graph of the equation 2x + 5y = -30, what is the value of the y-intercept?

5 Answers

• The y-intercept, as the name suggests, is the point where a line crosses the y-axis. The x-value of a y-intercept is always zero (because that’s where the y-axis is).

  When a linear equation is in the form y = mx + b, the y-value of the y-intercept is b. So, if you manipulate the given equation into that form, you’ll find the y-intercept.

  2x + 5y = -30

  5y = -2x – 30

  y = (-2/5)x – (30/5)

  y = (-2/5)x – 6

  The y-value of the y-interecept is thus -6. So, the coordinate of the y-intercept is (0,-6)

• Y-intercept means that X=0

  So 2(0)+5y=-30

  5y=-30

  Y-intercept=-6

  I did not understand the second question about which graph… But the slope you should know the formula y2-y1/x2-x1 x1=1 y1=4 x2=1 y2=-3

  So -3-4/1-1 -7/0 so the slope is a straight vertical line (from up to down)

• the y-intercept is the value on the graph where x = 0

  2(0) + 5y = -30

  5y = -30

  y = -30/5 = -6

  that’s it– the y-intercept is -6 (or the point (0 , -6))

• It is -6. One simple way is taking x as zero and solving the equeation. Or draw the graph and point at which the line intersects th ey-axis is the y intercept.

• It’s -6