The equation of the line in slope-intercept form: y = (1/2)x - 7.
Explanation:
Slope-intercept form: y = mx + c
m (slope) = 1/2
Let (x1, y1) be (6, -4)
Using point-slope form,
y - y1 = m(x - x1)
y - (-4) = 1/2 * (x - 6)
y + 4 = (1/2)x - 3
y = (1/2)x - 7
Answer:
1.40 $ per pound.
Step-by-step explanation:
it is $1.40
DBE is similar to ABC by the SAS Similarity Theorem
Let x dollars be your investment at 7%;
then the investment at 3% is the rest (1000-x) dollars.
The total interest equation is
0.07x + 0.03*(1000-x) = 0.061*1000.
Express x and calculate
x = %280.061%2A1000-0.03%2A1000%29%2F%280.07-0.03%29 = 775.
ANSWER. $700 is the 7% investment; the rest, (1000-775) = 225 dollars is the 3% investment.
Interest = (PRT)/100 = (1200×4×1)/100 = $48