The y-intercept means... When does the line cross through the y-axis?
This happens when the x-value is zero... so simply just plug in zero for "x"
y = 2 * (0) + 10
y = 10
y-intercept is equal to 10
For the x-intercept just make the y-value equal to zero.
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2x+10=12 2x=2 x=1
2x + 10 = 182x = 8x = 4
If your question was 2X + 5 =10. X equals what? Then X=2.5
5x+2=2x-10 x=-4
If 4x - 2x + 4 = 10, the solution is 2x + 4 = 10 and x = 3.