8000 * 4% +1000 = 1320
His gross pay is $1320 .
X = # 5 inch stones, y = # 10 inch stones
5x + 10y = 145y = x + 1
5x + 10(x + 1) = 1455x + 10x + 10 = 14515x = 135x = 135/15x = 9 <=== 9 five inch stones
y = x + 1y = 9 + 1y = 10 <=== 10 ten inch stones
A reflection across the Y-axis means that the Coordinate's X-value switches signs and the Y-value stays the same. So in the case of (-3,2)
being reflected across the y-axis that means that -3 flips its sign and becomes a normal 3 and the 2 stays the same. Therefore the new coordinate is (3,2)
Think you accidentally typed -5x + 2y = 10 twice.
Anyhow, let's rearrange the equation to match the equation for a line which is y = mx + b:
-5x + 2y = 10
2y = 5x + 10
y = 5/2x + 5
Now, the slope in a line is the m value. So 5/2 is the slope.
y = 5/2x + 5
↑ <span>↑</span>
slope y-intercept