Use the function rule, y = 2x + 5, to find the values of y when x = 1, 2, 3, and 4. Write the answers as ordered pairs that would be used to graph the function.
I did 3 I just need help with 1, 2 and 4.
To find the values of y when x = 1, 2, and 4 using the function rule y = 2x + 5, we need to substitute each value of x into the equation and solve for y.
For x = 1:
Substituting x = 1 into the equation, we get:
y = 2(1) + 5
y = 2 + 5
y = 7
So when x = 1, y = 7. The ordered pair is (1, 7).
For x = 2:
Substituting x = 2 into the equation, we get:
y = 2(2) + 5
y = 4 + 5
y = 9
So when x = 2, y = 9. The ordered pair is (2, 9).
For x = 4:
Substituting x = 4 into the equation, we get:
y = 2(4) + 5
y = 8 + 5
y = 13
So when x = 4, y = 13. The ordered pair is (4, 13).
you mean you can figure out 2*3+5, but you cannot do the same for 1,2,4?
Ai caramba!