Solution:
Let x represent the number of touchdowns,
let y represent the number of field goals.
Given that the number of field goals was 1 more than twice the number of touchdown, this implies that
7 points is earned for touchdown, and 3 points for each field goal. If a total of 55 points is earned, this implies that
Thus, the system of equations that best represent this situation is
To solve the number of touchdowns and number of field goals, we solve the simultaneous equations:
Using the method of substitution,
step 1: From equation 1, make y the subject of the formula.
step 2: Substitute equation 3 into equation 2.
step 3: Open parentheses and collect like terms.
step 4: Divide both sides of the equation by the coefficient of x.
The coefficient of x is 13.
Thus,
step 5: Substitute the obtained value of x into equation 3.
Thus,
Hence,
Number of touchdowns x:
Number of field goals y: