How do I separate these two series of data in the Chart? They are meant to represent a curve and a straight line tangent to the curve, but it keeps connecting the two lines at one end. I know i'm not utilizing GraphModel in this sample data, it's just an idea to name each "line" independently. Also most values are hard coded in for simplicity. I would appreciate any help!

import SwiftUI
import Charts

struct GraphModel: Identifiable {
    let id = UUID()
    let line: String
    let values: [(x: Double, y: Double)]
}

class graphViewModel: ObservableObject {
    var startPoint: Int{ Int(-1084)}
    var endPoint: Int{ Int(startPoint + Int(2000))}
    var values1: [(x: Double, y: Double)]{
        (startPoint...endPoint).map { x in
            let y: Double = Double(3383) * Double(cosh(Double(x) / (3383)) - 1 )
            return (Double(x), y)
        }
    }

    var values2: [(x: Double, y: Double)]{
        (startPoint...endPoint).map { x in
            let y: Double = ((Double(x) * (-0.079)) - 10.62)
            return (Double(x), y)
        }
    }
}

struct ContentView: View {
    @ObservedObject var viewModel: graphViewModel

    var body: some View {
        VStack(alignment: .leading) {

            Chart {
                ForEach(viewModel.values1, id:\.x){ val in
                    LineMark(
                        x: .value("x", val.x),
                        y: .value("y", val.y))
                }
                ForEach(viewModel.values2, id:\.x){ val in
                    LineMark(
                        x: .value("x", val.x),
                        y: .value("y", val.y))
                }

            }.frame(height: 250)
                .chartXAxis(.hidden)
        }.padding()
    }
}

let viewModel = graphViewModel()
struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView(viewModel: viewModel)
    }
}

You're a genius sir, thanks!