Olivia drives 90 miles in 2 hours. She drives 225 miles in 5 hours. She writes an equation in the form y=mx to represent the number of miles y and the number of hours x. If the graph of this line passes through the point (6,y), what is the value of y?​

Respuesta :

Answer:

[tex]y=270\textrm{ miles}[/tex]

Step-by-step explanation:

Given:

Number of miles is represented by [tex]y[/tex] and number of hours is represented by [tex]x[/tex].

The equation to show the relationship between [tex]x[/tex] and [tex]y[/tex] is [tex]y=mx[/tex]

Now, for [tex]x=2,y=90[/tex]

Plug in the above equation and solve for [tex]m[/tex]. This gives,

[tex]90=m(2)\\m=\frac{90}{2}=45\textrm{ mi/h}[/tex]

Hence, the equation is [tex]y=45x[/tex].

Now, if the line passes through [tex](6,y)[/tex], then [tex]x = 6[/tex].

So, [tex]y=45(6)=270\textrm{ miles}[/tex]

Therefore, the value of [tex]y[/tex] is 270 miles.