Use the the substitution method to solve the system of linear equations. y = -2x + 6 x=4 enter your answer as an ordered pair
1 answer:
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Answer:
B.
Step-by-step explanation:
Let x be number of days and y be value of card.
It has been given that your parents gave you a gift card for your favorite coffee shop. The card was worth $50 when you got it. Each day, you buy a drink for $3.
We can see that value of card is dependent on number of days as value of card decrease by 3 each day. This means that slope of our line will be -3.
As initially you have $50, this means that y-intercept of our given line will be 50.
Since we know that equation of a line in slope-intercept form is: , where,
m = Slope of line.
b = y-intercept.
Upon substituting our given values in slope intercept form of equation we will get,
Therefore, the equation shows the value on the gift card over time.